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Burka [1]
3 years ago
10

Factor completely 2x3 + x2 - 18x - 9

Mathematics
2 answers:
melisa1 [442]3 years ago
7 0
Factor the following:
2 x^3 + x^2 - 18 x - 9

Factor terms by grouping. 2 x^3 + x^2 - 18 x - 9 = (2 x^3 + x^2) + (-18 x - 9) = x^2 (2 x + 1) - 9 (2 x + 1):
x^2 (2 x + 1) - 9 (2 x + 1)

Factor 2 x + 1 from x^2 (2 x + 1) - 9 (2 x + 1):
(2 x + 1) (x^2 - 9)

x^2 - 9 = x^2 - 3^2:
(2 x + 1) (x^2 - 3^2)

Factor the difference of two squares. x^2 - 3^2 = (x - 3) (x + 3):

Answer:  (x - 3) (x + 3) (2 x + 1) thus the Answer is C.
Contact [7]3 years ago
4 0

Answer:

(x - 3) (x + 3) (2 x + 1) thus the Answer is C.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

First we find the slope

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The slope intercept form is

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Using a point

-10 = -3(2)+b

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6 0
3 years ago
We can calculate E, the amount of euros that has the same value as D U.S. dollars,
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5 0
4 years ago
Read 2 more answers
Can someone please help me with this
krek1111 [17]

point 1 = ( -1 , 5 )       point 2 = ( 5 , -5 )

equation of a line:       y = mx + b

Find Slope (m):

( 5 - (-5)) / (-1 - 5))

= 10 / -6

= -3 / 2

slope = -3/2


Find y-intercept (b):

y = mx + b

y = -3/2 * x + b

5 = -3/2 * -1 + b          <--------------  use the x and y coordinate of one of the                                                                                  .                                                                        points. I used point 1 ( -1 , 5 )

b = 7/2 or 3.5


Assemble:

y = -3/2 * x + 3.5

4 0
3 years ago
How do you know to add or subtract when doing polynomials?
grin007 [14]

Answer:

Adding and Subtracting Polynomials. When adding and subtracting polynomials , you can use the distributive property to add or subtract the coefficients of like terms. Use the commutative property to group like terms. (Recall that "like terms" are monomials with the same variables, such as 3 x 2 y and 82 x 2 y .)

8 0
3 years ago
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